Wrench



F. c. REILLY April 12. 1927.

WRENCH Filed Oct 2. 1925 Patented Apr. 12,1927.

PATENT OFFICE.

FRANK c. REILLY, on NEW YORK, N. Y.

WRENCH.

Application filed October 2, 1925.

This invention relates particularly to spanner wrenches of the fixed jawtype.

Special objects of the invention are to provide a ratcheting wrench ofthe fixed jaw type which will hold nuts or bolts of various sizeswithout slipping or marring the corners of the bolts or nuts, which willcombine the features of firm grip and easy ratcheting action and whichwill be strong, simple, inexpensive and entirely practical.

These objects are attained by a novel construction, arrangement,proportion and relation of parts, one of the commercial embodiments ofwhich is illustrated in the accompanying drawing.

The single figure is a face view of a double ended spanner wrench havingthe invention embodied therein.

The shank or handle of the wrench is designated 1 and is shown as havingheads 2 and 8 at the opposite ends of the same.

Both these heads have jaws for holding a plurality of hexagonal nuts orbolts and comprising in each instance a single straight jaw face 4 and aplurality of stepped or offset aw faces 5, 6, 7, 8, parallel to thestraight jaw face.

The steps or echelons 9, 10, 11, connecting. the offset jaws of thefirst head 2 are made of substantially equal length to the jaw faces 6,7 and 8 respectively so as to grip both sides of the hexagonal belts ornuts substantially equally.

On the other head 3 the echelons or steps 12, 13, 14, increase in lengthtoward the end of the wrench so as to obtain proportionately greaterhold on the bolts or nuts of larger sizes. The jaw faces 5, 6, 7, 8,however, in this form are of substantially equal length.

Each form of jaw head has its advantages. The jaws of the first head, 2,where the jaw faces and echelons are of substantially equal length andboth increase toward the larger sizes, have more secure and greaterholding power; Whereas the jaws of the head 3, where the steps are ofincreasinglength toward the larger sizes, have on easier ratchet-- ingaction. Where both forms of wrench heads are combined in the one wrenchtherefore, the Wrench may be turned end for end Serial No. 60,002.

and used, one head or the other, to suit the work in hand. In both formsthe ratcheting is easily and naturally effected and the possibility ofslippage is reduced to a minimum as a relatively light endwise pressureserves to hold the jaws interlocked with the companion bolts or nuts.

The endwise pressure is specially effective to hold the wrench firmlyengaged with the nut or bolt head in the illustration by arranging thestepped side of the wrench substantially in a direct line with thelength of the wrench. Thus in the structure shown a straight linetouching the tips of the stepped jaw faces will be substantiallyparallel to the longitudinal axis of the wrench. This means that simpleendwise pressure en the wrench handle will always have a tendency toforce the wrench the more firmly into engagement with the nut or bolthead and ti c wrench may be engaged or disengaged by a simple endwisemovement. This novel structure and arrangement practically eliminatesslippage because in the use of the wrench the natural pressure isendwise and hence the user is automatically countenacting slippagetendencies at all times.

What is claimed is:

1. A fixed aw ratcheting wrench comprising a straight jaw face andstepped jaw faces opposite and parallel to said straight jaw face, saidstepped jaw faces being spaced from. the straight aw face to accommodatea series of nuts of increasing size and the steps connecting said jawfaces being of successively increasing length toward the end of thewrench accommodating the nuts of larger size.

2. A fixed aw ratcheting wrench comprising a straight jaw face, steppedjaw faces parallel and opposite thereto, said stepped jaw faces and thesteps connecting the same being of substantially equal length for eachsize nut accommodated by' the wrench and both being of increased lengthtoward the larger open end of the wrench.

In witness whereof, I have hereunto set my hand this 18th day ofSeptember, 1925.

FRANK C. REILLY.

